This model is a remix from Thingyverse: https://www.thingiverse.com/thing:4594800
V2 is more rigid + the blend files are cleaner and easier to edit.
First You have to open up the goggles. It is held by two screws, I also unscrewed the fan but I am not sure if thats necessary. Carefully separate the two sides. They are still held together with these little pins so use a screwdriver or something. Now remove the aomway vRx. Just move the black thingy on the port out and the white wire should be easily romavable. Dont force it. Now you should solder three wires gnd, 5v and video. No need to look for them with an oscilometer, there are guides online.
https://www.getfpv.com/learn/fpv-diy-repairs-and-mods/aomway-commander-receiver-mod/
and this video from Drone mesh
The author hasn't provided the model origin yet.